Year	constant 2015 US$
1960	7746868799.360035
1961	8241822017.614718
1962	9491400472.130941
1963	9912004831.107311
1964	10686472115.256418
1965	11614029033.700113
1966	12192663932.176277
1967	12675382528.018076
1968	13549922749.339258
1969	14386661124.487288
1970	15530127757.69174
1971	16764569788.325352
1972	16688730814.778801
1973	17423357149.01927
1974	18771753707.639584
1975	21043393696.03238
1976	22200271357.65096
1977	23050734469.48011
1978	23205549499.243183
1979	24319998117.750404
1980	26536896013.552208
1981	27039456657.28157
1982	28749088285.34905
1983	29270079289.764496
1984	31262205212.262867
1985	32337048162.061703
1986	33078105515.77562
1987	34315527774.945705
1988	34884280863.01146
1989	36285380410.48729
1990	37106276518.15196
1991	37945053997.03547
1992	38652779847.38094
1993	39105861340.946
1994	39422169700.487045
1995	37053329213.2981
1996	38463275969.16248
1997	39284960864.8937
1998	38412648717.32533
1999	38579539460.57864
2000	39709356184.366356
2001	40949276000.53331
2002	42821252503.78411
2003	45242176343.25959
2004	47611688879.82621
2005	48125432909.56576
2006	49938546746.45314
2007	53036801877.543976
2008	57105365336.80503
2009	58113697177.40986
2010	57951624004.95658
2011	60318088144.18031
2012	63207512591.46556
2013	65205936889.73939
2014	66461873316.75908
2015	65823101021.90468
2016	67151017591.19107
2017	66964289615.47209
2018	67691713451.02622
2019	68937744296.39157
2020	69577862101.68852
2021	69922527422.02388
2022	70587851090.52835
2023	72069219031.11201